Grease-cup.



Q E. N. GARRISON.

GREASE CUP.

APPLICATION FILED SPT.16. 1915. RENEWED MAY 5.1917.

1,230,088. Patented June 12, 1917.

Quorum:

EDWARD N. GARRISON, OF BRIDGEPORT, CONNECTICUT.

GREASE-CUP.

Specification of Letters Patent.

Patented J un-e 12, 191 '7.

Application filed September 16, 1915, Serial No. 50,933. Renewed May 5, 1917. Serial No. 166,767.

To aZZ whom it may concern:

Be it known that I, EDWARD N. GARRISON, a citizen of the United States, residing at the city of Bridgeport, county of Fairfield, State of Connecticut, have invented certain new and useful Improvements in Grease- Cups; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in grease cups and more especially to that type in which the lubricant is carried in the cap and fed into the cup body by screwing or moving the cap down onto the cup.

An important object of the invention resides in an improved centrally fed cup wherein the cap is not interiorly threaded nor the cup exteriorly threaded.

A. further object is to provide a washer or packing between the cup and cap for preventing leakage between the two and back turning of the cap. I

Other objects of importance will be set forth hereinafter and such features of construction, arrangements and combination of parts on which protection is desired will be defined in the appendedclaims.

In the drawing:

Figure 1 is a vertical section through the improved grease cup embodying the present invention;

Figs. 2 and 3 are horizontal sections taken about on lines 2-2 and 33, respectively, of Fig. 1, and looking in the directions of the arrows; and

Fig. 4: is a fragmentary vertical section of slightly modified form of the grease cup.

Referring more particularly to the drawing, the numeral 1 designates the body of the grease cup which is preferably hexagonal in cross section to afford a proper hold of a wrench in threading the contracted and exteriorlv threaded nipple or lower part 2 into a caring, such lower part having a central discharge opening 3 in its bottom wall for obvious reasons. The upper or entrance end of the body portion 1 is formed with a peripheral flange 41 on which seats a plate 5, the latter bein desirably spot welded or electrically wel ed thereto.

The central portion of plate 5 is drawn downwardly to form a sleeve or nut portion 6, which is threaded internally, and is provided with a-surrounding series of openings 7 through which grease is admitted to the cup body 1.

Immediately beneath the flange 4 is a leather or fiber washer or ring 8 projecting slightly beyond said flange and clamped thereto by a metal ring 9 which is retained in such position in any suitable manner, such as throwing up a chip 10. The rings 8 and 9 have hexagonal openings conforming with the body 1 and thereby assist in holding the rings against rotation relative to the body.

The cap 11 has a central aperture of angular cross-section through which projects a similarly shaped stem 12 of a screw 13 which depends from the cap, the projecting end of the stem being headed, as depicted in Fig. 1. This screw 13 engages the threadedsleeve 6, whereby, on rotating the cap in one direction, the latter will lower to force or press the grease or lubricant, which is in the cap,-

through the openings 7 of plate 5 into body portion 1 and finally effect a discharge through opening 3. The cap snugly receives or fits the leather ring 8 to obviate leakage and provide suflicient friction therebetween to'prevent accidental back turning of the cap. If desired, a Wing 14: may be provided on the cap so that it may be grasped readily by the fingers to turn the cap.

In practice, the cap is removed and filled with the lubricant. In replacing the caps on the usual grease cups, in which the cap is interiorly threaded to engage exterior threads of the cup, great annoyance and dif ficulty accompanies the initial engagement of the threads and in cups of very large diameter even the greatest care will not prevent an occasional crossing of the threads. Thus, the smaller thediameter, the easier to engage the threads properly.

Consequently, the replacement of cap 11 is facilitated by the small rigid screw 13 which is engaged in the threaded sleeve portion of the perforated plate 5. It is of course clear that the cup body may be full notwithstanding the fact that the cap has exhausted its supply. However, the intention is to have enough lubricant in the cap, whereby, on screwing the same down, such lubricant willbe forced through openings 7 into the body for discharge through the central feed opening 3. During the feeding operation, the leather ring 8, besides preventing leakage, eliminates accidental back turning of the cap, thereby doing away with such preventive devices, as the pawl and ratchet. I

In some instances, a cap having a greater grease capacity can be used advantageously in connection with a body portion of stand ard size. This is accomplished by providing an extension ring 15 which lies flush with plate 5 and has an inner depressed portion 16- to engage under the flange 4:. The clamping metal ring 9 is also of greater width, and forms, with the extension ring 15, an annular groove to receive the leather ring 8, the latter extending beyond the rings and snugly fitting the inner-wall of cap 11. Thus, any desired capacity may be obtained for a standard cup.

While I have described the packing ring 8 as made of leather or any suitable fibrous material, I do not wish to be limited in this respect since I could employ any suitable metallic packing in this connection, it being merely necessary that the packing should prevent leakage of the grease and exert sufficient friction against the inner wall of the cap to prevent accidental back turning of the latter.

What is claimed is:

l. A grease cup comprising a body polygonal in cross section and having a contracted nipple formed with a central discharge opening, a peripheral flange provided on the upper end of the body, a plate secured to the'flange and formed with a central threaded opening and a surrounding series of grease openings, a leather washer engaging the under side of the flange and extending beyond the latter, a clamping ring securing the leather ring in place, a cap snugly receiving the leather ring, a screw fixed to and depending within the cap for engaging the threaded opening of the plate whereby on turning of the cap the same will move longitudinally of the body, and means on the cap for turning the latter.

2. A grease cup comprising a body hav- 7 ting over the plate and adapted for containing the lubricant, and a screw fixed to the cap and engaged with the threaded opening of the plate for moving the cap longitudinally on turning the latter.

3. A grease cup comprising a body having a discharge opening and an entrance opening, a peripheral flange on the body about the entrance opening, a perforated plate. seating on the flange and provided with a screw threaded opening, an extension ring extending beyond the plate and formed;

with a depressed inner portion engaging beneath the flange, a clampmg ring clamping the extenslon ring agamst the flange and forming with the extension ring an annular pocket, a fibrous ring engaging the annular pocket between the extension and clamping rings and projecting therebeyond, a cap snugly receiving the fibrous ring, and .a V screw carried by the cap' and engaged 1n the threaded opening of the plate;

In testimony whereof I aflix my signature in presence of two witnesses.

Witnesses:

F. W. SMITH, Jr, M. T. LONGDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, .D. C. v 1 b V EDWARD N. 'eAnmsouj 

